US customary cups to imperial fluid ounces converter
Convert US customary cups (cup (US)) to imperial fluid ounces (fl oz (UK)).
Volume converter
Instant conversion
Edit either value. Decimals and scientific notation supported.
1
cup (US)
esc
LitreL
MillilitremL
Cubic metrem³
Cubic centimetrecm³
Cubic footft³
Cubic inchin³
US liquid gallongal (US)
Imperial gallongal (UK)
US fluid ouncefl oz (US)
Imperial fluid ouncefl oz (UK)
US customary cupcup (US)
Metric cupcup (metric)
US liquid pintpt (US)
US liquid quartqt (US)
Imperial pintpt (UK)
Imperial quartqt (UK)
US customary teaspoontsp (US)
US customary tablespoontbsp (US)
Metric teaspoon (5 mL)tsp (metric)
Metric tablespoon (15 mL)tbsp (metric)
Cubic yardyd³
Imperial gillgi (UK)
Imperial peckpk (UK)
Imperial bushelbu (UK)
Imperial fluid drachmfl dr (UK)
Imperial minimminim (UK)
No units found. Try a name or symbol.
8.326741846
fl oz (UK)
esc
LitreL
MillilitremL
Cubic metrem³
Cubic centimetrecm³
Cubic footft³
Cubic inchin³
US liquid gallongal (US)
Imperial gallongal (UK)
US fluid ouncefl oz (US)
Imperial fluid ouncefl oz (UK)
US customary cupcup (US)
Metric cupcup (metric)
US liquid pintpt (US)
US liquid quartqt (US)
Imperial pintpt (UK)
Imperial quartqt (UK)
US customary teaspoontsp (US)
US customary tablespoontbsp (US)
Metric teaspoon (5 mL)tsp (metric)
Metric tablespoon (15 mL)tbsp (metric)
Cubic yardyd³
Imperial gillgi (UK)
Imperial peckpk (UK)
Imperial bushelbu (UK)
Imperial fluid drachmfl dr (UK)
Imperial minimminim (UK)
No units found. Try a name or symbol.
CONVERSION
1 cup (US) ≈ 8.326741846 fl oz (UK)
6 significant figures
10 significant figures
15 significant figures
Precision changes displayed rounding, not calculation accuracy.
FORMULAfl oz (UK) = cup (US) × 8.32674184628989
FORMULA & EXAMPLES
How to convert US customary cups to imperial fluid ounces
fl oz (UK) = cup (US) × 8.32674184628989
Multiply the cup (US) reading by 8.32674184628989.
Worked examples
1 cup (US) ≈ 8.326741846 fl oz (UK)
1 × 8.32674184628989 ≈ 8.326741846
16 cup (US) ≈ 133.2278695 fl oz (UK)
16 × 8.32674184628989 ≈ 133.2278695
Frequently asked questions
Why do UK and US capacity readings differ?
The Imperial gallon is 4.54609 L, while the US liquid gallon is 3.785411784 L. Each system has 8 pints and 4 quarts per gallon. An Imperial gallon contains 160 Imperial fluid ounces; a US gallon contains 128 US fluid ounces.
US customary cups to imperial fluid ounces table
Fixed reference · US customary cup to Imperial fluid ounce
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
US customary cup (cup (US))
Imperial fluid ounce (fl oz (UK))
0
0
0.1
0.8326741846
0.5
4.163370923
1
8.326741846
2
16.65348369
5
41.63370923
10
83.26741846
25
208.1685462
50
416.3370923
100
832.6741846
1000
8326.741846
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.